Lily Design System™

Date Range

A date range is a component that provides paired start and end date inputs, allowing users to specify a span of time. Commonly used in booking forms, search filters, reporting interfaces, and scheduling tools, the date range component groups two date inputs together with a shared label to communicate that they represent a related pair.

This headless component renders a <fieldset> containing two native <input type="date"> elements, each with its own accessible label. Both the start and end values support two-way binding for reactive state management.

Example

Show demo markup 
<fieldset class="date-range" aria-label="Project dates"><input class="date-input" type="date" aria-label="Start date" value="2026-01-01"><input class="date-input" type="date" aria-label="End date" value="2026-12-31"></fieldset>
Usage example 
<script lang="ts">
    import DateRange from "./DateRange.svelte";

    let start = $state("");
    let end = $state("");
</script>

<DateRange
    label="Trip dates"
    startLabel="Departure"
    endLabel="Return"
    bind:start
    bind:end
/>
Show Svelte source 
// In your Svelte component:
import DateRange from "lily-design-system-svelte-headless/components/DateRange/DateRange.svelte";

<DateRange>
  <!-- content -->
</DateRange>

Usage

Hotel booking date range:

<DateRange
    label="Stay dates"
    startLabel="Check-in"
    endLabel="Check-out"
    start={checkIn}
    end={checkOut}
/>

Report filter with date range:

<DateRange
    label="Report period"
    startLabel="From date"
    endLabel="To date"
    start={reportStart}
    end={reportEnd}
/>

Props

  • label: string (required) -- accessible group label applied to the fieldset via aria-label
  • startLabel: string (required) -- accessible label for the start date input
  • endLabel: string (required) -- accessible label for the end date input
  • start: string (default: "") -- start date value in YYYY-MM-DD format; bindable
  • end: string (default: "") -- end date value in YYYY-MM-DD format; bindable

Keyboard Interactions

  • Tab: Move focus between the start and end date inputs
  • Up Arrow / Down Arrow: Increment/decrement the focused date segment
  • Left Arrow / Right Arrow: Move between date segments within an input

(These are provided by the native <input type="date"> elements.)

ARIA

  • aria-label={label} on <fieldset> -- provides an accessible group name for the date range pair
  • aria-label={startLabel} on the start input -- identifies the start date field
  • aria-label={endLabel} on the end input -- identifies the end date field

When to Use

  • Use to display a formatted start and end date range.
  • Use for showing booking periods, appointment windows, or report date ranges.
  • Use when the two dates are semantically paired and should be grouped under a single label.
  • Use in search filters, scheduling tools, and leave request forms where a time span is required.

When Not to Use

  • Do not use for selecting a date range visually on a calendar -- use CalendarRangePicker instead.
  • Do not use for a single date -- use DateInput or ReviewDate instead.
  • Do not use when start and end dates are unrelated and belong to separate form sections.

Headless

This headless component provides a semantic <fieldset> grouping two native <input type="date"> elements with accessible labels and two-way binding. It handles ARIA labeling for both the group and individual inputs. The consumer provides all visual styling, layout, spacing, and any validation indicators.

Styles

The consumer provides all CSS styling. The component renders with a .date-range class for targeting. No default styles are included — this is a fully headless component.

Testing

  • Verify the component renders a <span> element with class date-range
  • Verify aria-label={label} on <fieldset>` -- provides an accessible group name for the date range pair
  • Verify aria-label={startLabel}` on the start input -- identifies the start date field
  • Verify aria-label={endLabel}` on the end input -- identifies the end date field
  • Verify keyboard interactions work correctly
  • Verify pass-through attributes are applied

Advice

  • Designers: Clearly indicate which field is the start and which is the end, using visual labels or positioning. Ensure the date inputs are visually grouped so users understand they form a pair.
  • Developers: Validate that the end date is not before the start date. Use the min and max attributes on the underlying inputs via restProps to constrain selectable ranges.

Implementation Notes

  • Renders a <fieldset> to semantically group the paired date inputs
  • Uses two native <input type="date"> elements for built-in browser date selection
  • Both start and end use two-way binding
  • Each input has its own aria-label for individual identification
  • Accepts ...restProps for forwarding additional attributes to the fieldset

Related components

  • date-input — an input for entering a date value <input type="date">
  • calendar-range-picker — a picker for selecting a date range on a calendar
  • date-field — a structured field for entering date components

References

  • MDN input type="date": https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/date
  • MDN fieldset element: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/fieldset

Canonical contract

Generated from this component's canonical metadata — the machine-checked source the implementations are held to.

Metadata

  • Component: date-range
  • PascalCase: DateRange
  • Description: paired start and end date inputs
  • Status: stable — exercised in composed page flows under e2e and axe, beyond the per-component checks
  • HTML tag: <fieldset> (containing two <input type="date">)
  • CSS class: .date-range
  • Interactive: yes

ARIA

  • aria-label={label} on <fieldset> -- provides an accessible group name for the date range pair
  • aria-label={startLabel} on the start input -- identifies the start date field
  • aria-label={endLabel} on the end input -- identifies the end date field

Keyboard

  • Tab: Move focus between the start and end date inputs
  • Up Arrow / Down Arrow: Increment/decrement the focused date segment
  • Left Arrow / Right Arrow: Move between date segments within an input

Props

  • label: string (required) -- accessible group label applied to the fieldset via aria-label
  • startLabel: string (required) -- accessible label for the start date input
  • endLabel: string (required) -- accessible label for the end date input
  • start: string (default: "") -- start date value in YYYY-MM-DD format; bindable
  • end: string (default: "") -- end date value in YYYY-MM-DD format; bindable